Let's solve the rounding problems step by step. The worksheet asks us to:
-
Round to the nearest 100 for questions 1–10.
-
Round to the nearest 1000 for questions 11–20.
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🔹 Rounding Rules:
-
To the nearest 100: Look at the
tens digit (the second digit from the right).
- If it’s
5 or more, round
up.
- If it’s
less than 5, round
down.
-
To the nearest 1000: Look at the
hundreds digit (the third digit from the right).
- If it’s
5 or more, round
up.
- If it’s
less than 5, round
down.
---
✔ Solutions:
####
Round to nearest 100:
1.
565 → 600
→ Tens digit is 6 → ≥5 → round up: 565 → 600
2.
948 → 900
→ Tens digit is 4 → <5 → round down: 948 → 900
3.
150 → 200
→ Tens digit is 5 → ≥5 → round up: 150 → 200
4.
264 → 300
→ Tens digit is 6 → ≥5 → round up: 264 → 300
5.
418 → 400
→ Tens digit is 1 → <5 → round down: 418 → 400
6.
750 → 800
→ Tens digit is 5 → ≥5 → round up: 750 → 800
7.
630 → 600
→ Tens digit is 3 → <5 → round down: 630 → 600
8.
287 → 300
→ Tens digit is 8 → ≥5 → round up: 287 → 300
9.
445 → 400
→ Tens digit is 4 → <5 → round down: 445 → 400
10.
350 → 400
→ Tens digit is 5 → ≥5 → round up: 350 → 400
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####
Round to nearest 1000:
11.
7,285 → 7,000
→ Hundreds digit is 2 → <5 → round down: 7,285 → 7,000
12.
1,900 → 2,000
→ Hundreds digit is 9 → ≥5 → round up: 1,900 → 2,000
13.
2,450 → 2,000
→ Hundreds digit is 4 → <5 → round down: 2,450 → 2,000
14.
5,500 → 6,000
→ Hundreds digit is 5 → ≥5 → round up: 5,500 → 6,000
15.
9,120 → 9,000
→ Hundreds digit is 1 → <5 → round down: 9,120 → 9,000
16.
3,641 → 4,000
→ Hundreds digit is 6 → ≥5 → round up: 3,641 → 4,000
17.
7,415 → 7,000
→ Hundreds digit is 4 → <5 → round down: 7,415 → 7,000
18.
3,645 → 4,000
→ Hundreds digit is 6 → ≥5 → round up: 3,645 → 4,000
19.
2,500 → 3,000
→ Hundreds digit is 5 → ≥5 → round up: 2,500 → 3,000
20.
6,814 → 7,000
→ Hundreds digit is 8 → ≥5 → round up: 6,814 → 7,000
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✔ Final Answers:
| # | Problem | Answer |
|---|--------|--------|
| 1 | 565 → |
600 |
| 2 | 948 → |
900 |
| 3 | 150 → |
200 |
| 4 | 264 → |
300 |
| 5 | 418 → |
400 |
| 6 | 750 → |
800 |
| 7 | 630 → |
600 |
| 8 | 287 → |
300 |
| 9 | 445 → |
400 |
|10 | 350 → |
400 |
|11 | 7,285 → |
7,000 |
|12 | 1,900 → |
2,000 |
|13 | 2,450 → |
2,000 |
|14 | 5,500 → |
6,000 |
|15 | 9,120 → |
9,000 |
|16 | 3,641 → |
4,000 |
|17 | 7,415 → |
7,000 |
|18 | 3,645 → |
4,000 |
|19 | 2,500 → |
3,000 |
|20 | 6,814 → |
7,000 |
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✔ All answers are now correctly rounded using standard rounding rules. Let me know if you'd like a printable version or explanation in simpler terms!
Parent Tip: Review the logic above to help your child master the concept of 3rd grade rounding worksheet.